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Telex is an Electrovoice product, based in Minneapolis MN. Check their website for customer service, and a phone number. They are always happy to help. If the product is older and has no replacement from the manufacturer, you may need to search online for auction sites that may sell older systems. God Luck.

I had the same problem. Mostly, when using near energy saving fluorescent lighting. I would receive high static, especially when the mic was off. We were using it indoors & usually no more than 200 ft from the receiver. I opened it up, resoldered some poor solder connections, sprayed contact cleaner on the squelch & volume controls, but still had the problem. What actually resolved the issue, was turning the squelch control (thru back panel) fully clockwise & completly lowering the antennas aimed horizontally to the rear. If you are using it outdoors, you should not have interference from fluorescent lighting, but may need to raise the antennas if operating from a greater distance.

the yellw wire is not used on the microphone conector most of them are just cut and left in there loose as long as its not shorting out on anything!! The wiring for the telex 56 for your radio Cobra 29 LTD is as follows: PIN #1 Shield & Red, PIN #2 White, PIN #3 Blue, PIN #4 Black, Yellow wire not connected!!

If you notice when you have the connector apart on the back of the pins where the wires get soldered to the pins are numbered so you will know which pins they are or on the front side of the connector the pins are also marked wich numbers they are!! If you have any other questions please feel free to e-mail us at: bigdscbshop@hughes.net

may be mic preamp is not working correctely. condenser microphone voltage is very low or mic is fault . check your microphone cable . preamplifer of condenser mic may be leaking .check ur mic driver and audio .